Thumb and touch conversations--thumb experience for a single hand touch screen phone

Lying in bed looking at the ebook in the phone, one hand carrying something in the subway, one hand dialing the number; while cooking, the cell phone rang and one hand was stained with oil; what do people in these situations have in common? Only one hand for mobile phone operation!

A mobile phone with a bad http://www.aliyun.com/zixun/aggregation/9714.html "> a one-handed experience can cause users to freak out in some situations, and a good design can save them and make them more comfortable coping with various operations. I personally miss the simple key mobile phone before, no matter under what circumstances, a hand can be successfully dealt with, and some mobile phones are designed for left-handed users of the left and right key switch mode (accessibility model). Developed to touch the screen, the principle seems to be slowly forgotten, the button to do the smaller, the user can only use the finger point to click, the operation is increasingly complex, this is really a far cry from the user experience.

Of course, there are still many mobile phones with excellent single hand operation experience. The mobile phone pictures released from other mobile time before can be seen, the phone from the interface specifically for a single hand operation to do a lot of optimization.

Ergonomics of the Thumb

In a single hand to touch screen mobile phone operation, is generally based on four fingers and palms, with the thumb to operate, so one hand operation touch screen mobile phone turned into a thumb and touch screen of a "dialogue."

Ergonomics studies show that the thumb has three joints that can be active (they are from the top down):

"The first joint of thumb" in the middle of the thumb: the maximum 90 degrees of bending forward, a few can bend backwards

"Second joint of thumb" at the root of the thumb: a maximum of 90 degrees of bending forward, with a few bending backwards.

"Wrist palm Joint" at the thumb and wrist junction: The wrist metacarpal joint is able to perform a greater degree of flexion and extension, so it is able to complete the movement of the palm (the hand movement is the sum of the external, flexion and rotational movements of the thumb bone). The result is that the tip of the thumb can be contacted with the other finger palms, which cannot be completed except for the fingers of the wrist.

Gesture

Generally in the operation, the user interacts with the touch screen mainly through different gestures. The existing touch screen can identify the user's gestures: tap,double tap, touch& hold, Pan,flick,pinch & Strech

Tap: The user taps the touch screen with a single finger and then immediately separates from the touchscreen

Double tap: Short time, two tap operation

Touch & Hold: Users use their fingers to tap the touchscreen and stay still.

Pan: The user finger taps the touch screen and moves the finger without leaving

Flick: The user taps the touch screen with his finger, then slides quickly and leaves the screen (imagine you're using your finger to play a thing)

Pinch & Stretch: The user moves two fingers in two directions respectively.

Here, we only discuss the single hand operation of the touch screen phone thumb behavior, so first remove the pinch & stretch this gesture.

How do I operate?

(The next part, I hope that the reader with one hand holding his mobile phone, personally feel)

Because "wrist palm joint" activity range and activity degree and "thumb joint" is bigger than, it's also easier, so when the user's thumb is shifted from the relaxed state (the thumb straight) to the touch screen, the wrist-palm joint is preferred (people are really lazy animals). If you don't believe it, try holding the screen in one hand and touching the screen with your thumb naturally. In addition, if you need to touch the screen with the tip of your finger (imagine a very small button that requires you to press), the first joint of the thumb will bend forward 90 degrees, but it still only moves the wrist joint when touching the touch screen.

The wrist-palm joint is preferred when the user makes drag gestures, and the first and second joints of the thumb are considered only when the wrist-palm joint is not available to reach the desired distance. If you are the right-hand user, please put the phone on the palm, with the thumb from the upper right corner to the left to the lower right corner, a maximum range of arc sliding, you will understand what I meant to say. For right-handed users, touch-screen one-handed operation also has a "dead zone"-the upper-left corner (the left-hand user is the upper-right corner). As a result, the area needs to be used very carefully when the design needs to be done in a particular environment (think of how a close button in the WM right corner would be a nightmare for left-handed users).

Flick is a very interesting operation gesture, and the user is also inclined to use the wrist-palm joint when operating. But the wrist-palm joint moves at a slower rate than the first joint in the middle of the thumb, and naturally shifts to the first joint of the thumb when the flick behavior is fast. However, do not forget that the first joint can only bend backwards and forwards, so only use the first joint of the flick, only up and down operation (yes!). , the arc can not be, unless the wrist palm joint participation.

In addition, imagine that the user is using drag gestures to slide the screen up and down, its trajectory will also be an arc (it is because they are lazy, wrist palm joint movement more relaxed, how wonderful).

The user is very busy, let them be relaxed, if one hand can operate with one hand. Human progress is the liberation of the hands of the upright walk, touch screen mobile phone progress will be the liberation of one of the hands?

(Some of the above research on thumb manipulation is based on my personal actions and some observations of the surrounding user, and it does not cover all possibilities.) If you are interested in this topic, or have new ideas, welcome to share with you. ）

by Sam @kaixin_yy

Source: http://www.ifanr.com/7980